/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 16:43:28,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 16:43:28,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 16:43:28,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 16:43:28,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 16:43:28,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 16:43:28,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 16:43:28,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf [2022-02-10 16:43:28,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 16:43:28,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 16:43:28,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 16:43:28,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 16:43:28,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 16:43:28,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 16:43:28,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 16:43:28,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 16:43:28,405 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 16:43:28,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 16:43:28,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 16:43:28,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 16:43:28,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 16:43:28,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 16:43:28,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 16:43:28,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 16:43:28,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 16:43:28,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 16:43:28,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 16:43:28,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 16:43:28,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:43:28,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 16:43:28,412 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-10 16:43:28,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 16:43:28,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 16:43:28,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 16:43:28,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 16:43:28,414 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 16:43:28,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 16:43:28,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 16:43:28,414 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 16:43:28,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 16:43:28,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 16:43:28,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 16:43:28,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 16:43:28,717 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 16:43:28,720 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 16:43:28,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl [2022-02-10 16:43:28,722 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl' [2022-02-10 16:43:28,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 16:43:28,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 16:43:28,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 16:43:28,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 16:43:28,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 16:43:28,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,778 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 16:43:28,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 16:43:28,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 16:43:28,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 16:43:28,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 16:43:28,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 16:43:28,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 16:43:28,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 16:43:28,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 16:43:28,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/1) ... [2022-02-10 16:43:28,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:43:28,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:28,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 16:43:28,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 16:43:28,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 16:43:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 16:43:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 16:43:28,873 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 16:43:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 16:43:28,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 16:43:28,873 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 16:43:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 16:43:28,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 16:43:28,874 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 16:43:28,916 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 16:43:28,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 16:43:28,994 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 16:43:29,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 16:43:29,009 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 16:43:29,009 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-02-10 16:43:29,011 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:43:29 BoogieIcfgContainer [2022-02-10 16:43:29,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 16:43:29,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 16:43:29,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 16:43:29,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 16:43:29,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:43:28" (1/2) ... [2022-02-10 16:43:29,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fdb0fa and model type send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 04:43:29, skipping insertion in model container [2022-02-10 16:43:29,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:43:29" (2/2) ... [2022-02-10 16:43:29,019 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive-alt.wvr.bpl [2022-02-10 16:43:29,023 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 16:43:29,023 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 16:43:29,023 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 16:43:29,023 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 16:43:29,050 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 16:43:29,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 16:43:29,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:29,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-10 16:43:29,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-10 16:43:29,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 16:43:29,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 16:43:29,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 16:43:29,353 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 20 transitions and produced 21 states. [2022-02-10 16:43:29,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash -612514274, now seen corresponding path program 1 times [2022-02-10 16:43:29,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:29,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9595095] [2022-02-10 16:43:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:29,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:29,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:29,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9595095] [2022-02-10 16:43:29,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9595095] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 16:43:29,589 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 16:43:29,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 16:43:29,590 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3027655] [2022-02-10 16:43:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 16:43:29,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 16:43:29,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 16:43:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 16:43:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:29,617 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:29,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:29,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:30,417 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 795 transitions and produced 656 states. [2022-02-10 16:43:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 16:43:30,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash -987070873, now seen corresponding path program 1 times [2022-02-10 16:43:30,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:30,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487722486] [2022-02-10 16:43:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:30,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:30,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:30,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487722486] [2022-02-10 16:43:30,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487722486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 16:43:30,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 16:43:30,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 16:43:30,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804274228] [2022-02-10 16:43:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 16:43:30,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 16:43:30,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 16:43:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 16:43:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:30,487 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:30,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:30,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:30,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:31,375 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1291 transitions and produced 1075 states. [2022-02-10 16:43:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:31,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 16:43:31,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1304321976, now seen corresponding path program 1 times [2022-02-10 16:43:31,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:31,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448091005] [2022-02-10 16:43:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:31,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:31,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:31,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448091005] [2022-02-10 16:43:31,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448091005] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:43:31,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068963706] [2022-02-10 16:43:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:31,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:31,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:43:31,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 16:43:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:31,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 16:43:31,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:43:31,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-02-10 16:43:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:31,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:43:31,966 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 16:43:31,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-02-10 16:43:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:32,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068963706] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:43:32,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:43:32,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 16:43:32,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435136843] [2022-02-10 16:43:32,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:43:32,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 16:43:32,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 16:43:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-10 16:43:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:32,061 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:32,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:32,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:32,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:32,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:33,612 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3116 transitions and produced 2535 states. [2022-02-10 16:43:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:33,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 16:43:33,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-10 16:43:33,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1738430269, now seen corresponding path program 2 times [2022-02-10 16:43:33,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:33,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688429862] [2022-02-10 16:43:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:33,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:33,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:33,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688429862] [2022-02-10 16:43:33,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688429862] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 16:43:33,900 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 16:43:33,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 16:43:33,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053337410] [2022-02-10 16:43:33,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 16:43:33,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 16:43:33,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:33,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 16:43:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 16:43:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:33,902 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:33,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:33,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:33,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:33,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:33,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:34,845 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1699 transitions and produced 1458 states. [2022-02-10 16:43:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 16:43:34,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2026072000, now seen corresponding path program 3 times [2022-02-10 16:43:34,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:34,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782872543] [2022-02-10 16:43:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:34,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 16:43:34,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:34,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782872543] [2022-02-10 16:43:34,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782872543] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:43:34,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132912617] [2022-02-10 16:43:34,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 16:43:34,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:34,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:43:34,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 16:43:34,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 16:43:34,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 16:43:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-10 16:43:34,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:43:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 16:43:34,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:43:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 16:43:35,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132912617] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:43:35,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:43:35,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-10 16:43:35,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2805310] [2022-02-10 16:43:35,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:43:35,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 16:43:35,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 16:43:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 16:43:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:35,023 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:35,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:35,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:35,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:35,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:35,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:35,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:35,761 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1511 transitions and produced 1403 states. [2022-02-10 16:43:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:35,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-10 16:43:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:35,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash 22104032, now seen corresponding path program 1 times [2022-02-10 16:43:35,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:35,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586600422] [2022-02-10 16:43:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:35,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:36,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:36,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586600422] [2022-02-10 16:43:36,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586600422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:43:36,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53194452] [2022-02-10 16:43:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:36,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:36,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:43:36,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 16:43:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:36,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 16:43:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:43:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:43:36,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:43:36,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-02-10 16:43:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:36,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:43:36,604 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 16:43:36,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-02-10 16:43:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:36,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53194452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:43:36,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:43:36,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 16:43:36,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048377561] [2022-02-10 16:43:36,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:43:36,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 16:43:36,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 16:43:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-10 16:43:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:36,751 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:36,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:36,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:36,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:36,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:36,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:36,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:36,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:37,971 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1888 transitions and produced 1764 states. [2022-02-10 16:43:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:43:37,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 16:43:38,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:38,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:43:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:43:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash -623510552, now seen corresponding path program 2 times [2022-02-10 16:43:38,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:43:38,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426733032] [2022-02-10 16:43:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:43:38,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:43:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:43:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:38,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:43:38,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426733032] [2022-02-10 16:43:38,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426733032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:43:38,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173499996] [2022-02-10 16:43:38,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 16:43:38,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:43:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:43:38,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:43:38,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 16:43:38,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 16:43:38,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 16:43:38,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 16:43:38,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:43:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:43:38,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:43:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:43:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:43:38,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:43:38,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:43:38,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-02-10 16:43:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:38,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:43:39,096 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-10 16:43:39,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-02-10 16:43:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:43:39,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173499996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:43:39,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:43:39,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 16:43:39,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221264855] [2022-02-10 16:43:39,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:43:39,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 16:43:39,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:43:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 16:43:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-02-10 16:43:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:43:39,409 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:43:39,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:43:39,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:44:12,904 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 70548 transitions and produced 47378 states. [2022-02-10 16:44:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:44:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 16:44:12,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-10 16:44:13,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:44:13,106 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:44:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:44:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash -634206939, now seen corresponding path program 3 times [2022-02-10 16:44:13,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:44:13,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456712445] [2022-02-10 16:44:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:44:13,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:44:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:44:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 16:44:13,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:44:13,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456712445] [2022-02-10 16:44:13,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456712445] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:44:13,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261316093] [2022-02-10 16:44:13,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 16:44:13,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:44:13,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:44:13,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:44:13,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 16:44:13,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 16:44:13,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 16:44:13,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-10 16:44:13,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:44:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:14,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:14,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:14,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 34 [2022-02-10 16:44:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:44:14,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:44:15,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:15,350 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 16:44:15,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 202 [2022-02-10 16:44:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:44:16,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261316093] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:44:16,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:44:16,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2022-02-10 16:44:16,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370873607] [2022-02-10 16:44:16,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:44:16,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 16:44:16,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:44:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 16:44:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 16:44:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:44:16,358 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:44:16,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:44:16,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:16,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:16,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:44:16,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:16,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:16,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:44:16,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-10 16:44:16,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:44:50,837 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 69963 transitions and produced 47382 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:44:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 16:44:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 16:44:50,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-10 16:44:51,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:44:51,040 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 16:44:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:44:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1974984632, now seen corresponding path program 4 times [2022-02-10 16:44:51,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:44:51,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972682063] [2022-02-10 16:44:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:44:51,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:44:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:44:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-10 16:44:51,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:44:51,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972682063] [2022-02-10 16:44:51,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972682063] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 16:44:51,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882316613] [2022-02-10 16:44:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 16:44:51,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 16:44:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:44:51,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 16:44:51,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 16:44:51,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 16:44:51,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 16:44:51,422 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-10 16:44:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 16:44:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 16:44:52,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 16:44:52,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-02-10 16:44:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:44:52,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 16:44:53,907 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-10 16:44:53,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-02-10 16:44:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:44:55,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882316613] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 16:44:55,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 16:44:55,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 40 [2022-02-10 16:44:55,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166594970] [2022-02-10 16:44:55,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 16:44:55,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-10 16:44:55,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:44:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-10 16:44:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 16:44:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:44:55,750 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:44:55,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-02-10 16:44:55,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.